CN205692690U - A kind of micro-transformer of current - Google Patents
A kind of micro-transformer of current Download PDFInfo
- Publication number
- CN205692690U CN205692690U CN201620562850.5U CN201620562850U CN205692690U CN 205692690 U CN205692690 U CN 205692690U CN 201620562850 U CN201620562850 U CN 201620562850U CN 205692690 U CN205692690 U CN 205692690U
- Authority
- CN
- China
- Prior art keywords
- cover plate
- transformer
- shell
- current
- connecting sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
This utility model relates to a kind of micro-transformer of current, and including shell, the transformer body being placed in shell, for the cover plate being fixed in shell by transformer body and stretch out the two panels metal connecting sheet that cover plate is connected with primary circuit；There is between cover plate and shell buckle structure；Transformer body includes toroidal core, the primary coil being wound on magnetic core and secondary coil；Having wire hole on shell, the end line at secondary coil two stretches out shell through this wire hole and is connected with secondary circuit；Cover plate is provided with two fixing holes adapted with metal connecting sheet size, metal connecting sheet insert from the cover plate back side and stretch out this fixing hole and be tightly fixed to cover plate, two panels metal connecting sheet does not extends out the end of the cover plate end line respectively with primary coil two and is connected.Micro-transformer of current of the present utility model is installed simple and convenient, greatly reduces material cost, improves production efficiency.
Description
Technical field
This utility model belongs to transformer application, particularly relates to a kind of micro-transformer of current.
Background technology
Current transformer (Current transformer is called for short CT) according to electromagnetic induction principle by bigger for numerical value once
Electric current is converted to, by certain no-load voltage ratio, the secondary current that numerical value is less, is mainly used to route protection, current measurement, electrical equipment isolation
Etc. purposes.Although current transformer comparative maturity in prior art, but it is in process of production, assembles up comparison numerous
Trivial, greatly reduce production efficiency；Simultaneously as prior art is the mode using encapsulating, current transformer is fixed,
Once loading error or break down, is difficult to again reprocess.To this end, people have carried out long-term exploration, it is proposed that various respectively
The solution of sample.
Such as, Chinese patent literature discloses a kind of current transformer, and [application number: 201410196883.8], to once
Winding only has the current transformer of a circle to be redesigned, by a Winding Design in skeleton, by transformer during installation
One time winding makes U-shaped coil, is directly loadable in skeleton primary side string holes, then carries out the coiling of Secondary Winding.
Above-mentioned technical scheme improves prior art to a certain extent, particularly proposes a kind of simple skeleton knot
Structure, greatly reduces transformer material cost and manufacturing cost.But, the most at least there is following defect in above-mentioned scheme: in entirety
Still need to during assembling use the mode of encapsulating to fix.
Utility model content
The purpose of this utility model is for the problems referred to above, it is provided that a kind of simple in construction and micro-transformer of current.
For reaching above-mentioned purpose, this utility model have employed following technical proposal:
A kind of micro-transformer of current, including shell, the transformer body being placed in described shell, for by described mutual inductance
Device body is fixed cover plate in the housing and stretches out the two panels metal connecting sheet that described cover plate is connected with primary circuit；
Between described cover plate and described shell, there is buckle structure；Described transformer body includes toroidal core, is wound on institute
State the primary coil on magnetic core and secondary coil；
Having wire hole on described shell, the end line at described secondary coil two stretches out described shell with secondary through this wire hole
Level circuit is connected；Described cover plate is provided with two fixing holes adapted with described metal connecting sheet size, and described metal connects
Sheet insert from the described cover plate back side and stretch out this fixing hole and be tightly fixed to described cover plate, described two panels metal connecting sheet is not
Stretch out the end of the described cover plate end line respectively with described primary coil two to be connected.
Preferably, also including the metal shielding adapted with the size of described shell, described outer cover suit is at described gold
Belong in shielding case.
Preferably, described cover plate front is additionally provided with two first projections, and described fixing hole is arranged in described first projection.
Preferably, the length ratio of the extension that described first protruding and described metal connecting sheet stretches out described cover plate front is
Between 1:4 to 1:2.
Preferably, the end line at two of described primary coil the most respectively with described two panels metal connecting sheet
End is connected.
Preferably, described wire hole is arranged on the rear wall that described shell is relative with cover plate.
Preferably, described cover plate side is multiple second protruding along being provided with, and described outer casing inner wall is provided with multiple and described second convex
Acting the groove adapted, when described cover plate is fixed on the housing, the plurality of second projection is just stuck in described groove.
Preferably, the side of described first projection also is provided with fixed lobe, described fixed lobe and described outer casing inner wall
Groove forms buckle structure.
Preferably, described metal connecting sheet is additionally provided with crush ribs and fixing flange, and described fixing flange is used for limiting institute
Stating the fixed position of metal connecting sheet and described cover plate, described crush ribs is closely buckled in described fixing hole inwall.
Preferably, the extension of described metal connecting sheet is additionally provided with wiring hole, for being connected with primary wire.
Compared with prior art, the utility model has the advantage of:
1, buckle structure is used between shell and the cover plate of a kind of micro-transformer of current of the present utility model, thus without
Fixed by encapsulating, install simple and convenient, greatly reduce material cost, improve production efficiency.
2, there is the structure of fixing metal connecting sheet 4, so that metal connecting sheet 4 can be tightly fixed to cover plate on cover plate
On.
Accompanying drawing explanation
Fig. 1 is the structural representation of the micro-transformer of current that this utility model provides.
Fig. 2 is the structural representation of metal connecting sheet 4 in the micro-transformer of current that this utility model provides.
In figure, shell 1, transformer body 2, cover plate 3, metal connecting sheet 4, metal shielding 5, wire hole 11, groove 12,
Magnetic core 21, primary coil 22, secondary coil 23, fixing hole the 31, first projection the 32, second projection 33, fixed lobe 34, extension
41, end 42, wiring hole 43, crush ribs 44, fixing flange 45.
Detailed description of the invention
The following is the specific embodiment of utility model and combine accompanying drawing, the technical solution of the utility model is made further
Describe, but this utility model is not limited to these embodiments.
As it is shown in figure 1, show the structural representation of a kind of micro-transformer of current of this utility model, including shell 1, put
Transformer body 2 in shell 1, for closing and fixing the cover plate 3 of transformer body 2 and stretch out cover plate 3 front with just
The two panels metal connecting sheet 4 that level circuit connects；Preferably, cover plate 3 and shell 1 use plastic material, shape to be set to rectangle, and
Between cover plate 3 and shell 1, there is buckle structure；Further, transformer body 2 includes toroidal core 21, is wound on magnetic core 21
Primary coil 22 and secondary coil 23；Have wire hole 11 on shell 1, generally wire hole 11 is arranged on shell 1 rear wall.
Two end lines of secondary coil 23 stretch out shell 1 through this wire hole 11 and are connected with secondary circuit；Cover plate 3 is provided with and is connected with metal
Two fixing holes 31 that sheet 4 size adapts, metal connecting sheet 4 from cover plate 3 back side insert and stretch out this fixing hole 31 and with lid
Plate 3 closely blocks firmly fixed, two panels metal connecting sheet 4 do not extend out the end 42 of cover plate 3 front portion respectively with primary coil 22
Two end lines are connected.In the present embodiment, two end lines of primary coil 22 the most respectively with two panels metal connecting sheet 4 phase
Connect.
In a preferred embodiment, cover plate 3 with the buckle structure of shell 1 particularly as follows: cover plate 3 side along be provided with multiple
Second projection 33, shell 1 inwall is provided with multiple groove 12 adapted with the second projection 33, when cover plate 3 is fixed on shell 1,
Multiple second projections 33 on cover plate 3 are just buckled in the multiple grooves 12 on shell 1 inwall.The present embodiment, uses and is growing
Square cover plate 3 side is respectively equipped with the second projection 33 along the center on every limit, rectangle shell 1 inwall near close mouth be provided with
The groove 12 that this second projection 33 adapts.Further, the side of the first projection 32 also is provided with fixed lobe 34, by fixing
Projection 34 forms buckle structure with the groove 12 of described shell 1 inwall, makes cover plate 3 the tightst with the connection of shell 1.
Technical solutions of the utility model are owing to using buckle structure between shell 1 and the cover plate 3 of current transformer, it is possible to straight
Connect card labor and fix transformer body 2, thus without being fixed by encapsulating, install simple and convenient, greatly reduce material cost, carry
High production efficiency.Simultaneously because have the structure of fixing metal connecting sheet 4 on cover plate 3, metal connecting sheet 4 can be mounted directly
And be tightly fixed on cover plate 3, the assembling process making transformer is the simplest.
In a preferred embodiment, in order to make metal connecting sheet 4 be fixed on the most closely on cover plate 3, at cover plate 3
Front is additionally provided with two first projections 32, and fixing hole 31 is arranged in the first projection 32.Metal connecting sheet 4 generally flat metal
Sheet, fixing hole 31 is also for flat pattern and adapt with metal connecting sheet 4 and make metal connecting sheet 4 can be tightly fixed to fixing hole
In 31.Further, the first projection 32 and metal connecting sheet 4 stretch out the length of cover plate 3 front portion than between for 1:4 to 1:2.
In the present embodiment, the length of employing is than for 1:3.
See Fig. 2, show the structural representation of metal connecting sheet 4 in the micro-transformer of current that this utility model provides
Figure, metal connecting sheet 4 is additionally provided with crush ribs 44 and fixing flange 45, and described fixing flange 45 is used for limiting described metal and connects
Sheet 4 and the fixed position of described cover plate 3, described crush ribs 44 is closely buckled in described fixing hole 31 inwall.By at gold
Belong to connecting and on sheet 4, crush ribs 44 and fixing flange 45 are set, make metal connecting sheet 4 be fixed on more closely on cover plate 3
In fixing hole 31.
For the performance of further motor current transformer, in a preferred embodiment, current transformer is additionally provided with
Insulation sleeve, insulation sleeve is wrapped in the line of secondary coil 23 and wraps.Primary coil 22 and secondary coil 23 is made to be electrically isolated completely to, from
And the performance of further motor current transformer.
For the performance of further motor current transformer, reduce the outer signals interference to current transformer, in one
In preferred implementation, current transformer also includes the metal shielding 5 adapted with the size of shell 1, and shell 1 is sleeved on gold
Belong in shielding case 5.The outer signals interference to current transformer, further motor current mutual inductance is reduced by metal shielding 5
The performance of device.
In a preferred embodiment, metal connecting sheet 4 stretches out the extension 41 in cover plate 3 front and is additionally provided with wiring hole
43, for being connected with primary wire.Owing to the extension 41 of metal connecting sheet 4 is provided with wiring hole 43, can be by primary wire
It is fixed in wiring hole 43 so that it is and connection between primary wire is convenient and the most reliable.
In a preferred embodiment, the number of turn of primary coil 22 is 1 circle-25 circle, and the number of turn of secondary coil 23 is
2000 circle-10000 circles；The winding diameter of primary coil 22 is 0.8mm-2.5mm, and the winding diameter of secondary coil 23 is
0.06mm-0.21mm.In the present embodiment, the number of turn of primary coil 22 is 4 circles, and the number of turn of secondary coil 23 is 2500 circles, primary
The winding diameter of coil 22 is 2mm, and the winding diameter of secondary coil 23 is 0.1mm.
Specific embodiment described herein is only to this utility model spirit explanation for example.This utility model institute
Belong to those skilled in the art described specific embodiment to make various amendment or supplement or use similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although the most more employ shell 1, transformer body 2, cover plate 3, metal connecting sheet 4, metal shielding 5,
Wire hole 11, groove 12, magnetic core 21, primary coil 22, secondary coil 23, fixing hole the 31, first projection the 32, second projection 33,
The terms such as fixed lobe 34, extension 41, end 42, wiring hole 43, crush ribs 44, fixing flange 45, but be not precluded from making
By the probability of other term.Use these terms to be only used to more easily and describe and explain essence of the present utility model；
It is all contrary with this utility model spirit for being construed as any additional restriction.
Claims (10)
1. a micro-transformer of current, it is characterised in that include shell (1), is placed in the transformer body in described shell (1)
(2), for cover plate (3) that described transformer body (2) is fixed in described shell (1) and stretch out described cover plate (3) with
The two panels metal connecting sheet (4) that primary circuit is connected；
Between described cover plate (3) and described shell (1), there is buckle structure；Described transformer body (2) includes toroidal core
(21) primary coil (22), being wound on described magnetic core (21) and secondary coil (23)；
Having wire hole (11) on described shell (1), the end line at described secondary coil (23) two stretches out through this wire hole (11)
Described shell (1) is connected with secondary circuit；Described cover plate (3) is provided with two adapted with described metal connecting sheet (4) size
Individual fixing hole (31), described metal connecting sheet (4) insert from described cover plate (3) back side and stretch out this fixing hole (31) and with closely
Being fixed on described cover plate (3), described two panels metal connecting sheet (4) does not extends out the end (42) of described cover plate (3) respectively with described
The end line at primary coil (22) two is connected.
Micro-transformer of current the most according to claim 1, it is characterised in that also include and the size of described shell (1)
The metal shielding (5) adapted, described shell (1) is sleeved in described metal shielding (5).
Micro-transformer of current the most according to claim 1, it is characterised in that described cover plate (3) front is additionally provided with two
First protruding (32), described fixing hole (31) is arranged in described first protruding (32).
Micro-transformer of current the most according to claim 3, it is characterised in that described first protruding (32) and described metal
Connect sheet (4) and stretch out the length ratio of extension (41) in described cover plate (3) front between for 1:4 to 1:2.
Micro-transformer of current the most according to claim 1 and 2, it is characterised in that two of described primary coil (22)
End line end (42) with described two panels metal connecting sheet (4) the most respectively be connected.
Micro-transformer of current the most according to claim 1 and 2, it is characterised in that described wire hole (11) is arranged on institute
State on the rear wall that shell (1) is relative with cover plate (3).
Micro-transformer of current the most according to claim 1 and 2, it is characterised in that described cover plate (3) side is multiple along being provided with
Second protruding (33), described shell (1) inwall is provided with the groove (12) that multiple and described second projection (33) adapts, described lid
When plate (3) is fixed on described shell (1), the plurality of second protruding (33) are just stuck in described groove (12).
Micro-transformer of current the most according to claim 3, it is characterised in that the side of described first protruding (32) also sets
Fixed lobe (34), described fixed lobe (34) is had to form buckle structure with the groove (12) of described shell (1) inwall.
Micro-transformer of current the most according to claim 1 and 2, it is characterised in that described metal connecting sheet (4) is additionally provided with
Crush ribs (44) and fixing flange (45), described fixing flange (45) is used for limiting described metal connecting sheet (4) and described lid
The fixed position of plate (3), described crush ribs (44) is closely buckled in described fixing hole (31) inwall.
Micro-transformer of current the most according to claim 1 and 2, it is characterised in that stretching of described metal connecting sheet (4)
Go out portion (41) and be additionally provided with wiring hole (43), for being connected with primary wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620562850.5U CN205692690U (en) | 2016-06-12 | 2016-06-12 | A kind of micro-transformer of current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620562850.5U CN205692690U (en) | 2016-06-12 | 2016-06-12 | A kind of micro-transformer of current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205692690U true CN205692690U (en) | 2016-11-16 |
Family
ID=57427536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620562850.5U Active CN205692690U (en) | 2016-06-12 | 2016-06-12 | A kind of micro-transformer of current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205692690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276431A (en) * | 2020-09-11 | 2021-01-29 | 深圳市启玄科技有限公司 | Current collecting device and current collecting method |
-
2016
- 2016-06-12 CN CN201620562850.5U patent/CN205692690U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276431A (en) * | 2020-09-11 | 2021-01-29 | 深圳市启玄科技有限公司 | Current collecting device and current collecting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102360860A (en) | Transformer with shell and magnetic ring | |
| CN205692690U (en) | A kind of micro-transformer of current | |
| CN205384921U (en) | Inductance coil structure | |
| CN201518270U (en) | Transformer structure | |
| CN207250819U (en) | A kind of three core plastic cement connectors | |
| CN106205968B (en) | Ignition coil silicon steel sheet | |
| CN206312734U (en) | LED drives ultra-thin transformer | |
| CN108987071B (en) | Transformer and preparation method thereof | |
| CN210296101U (en) | SMD large current isolation current transformer | |
| CN202084410U (en) | Transformer with casing and magnetic ring | |
| CN206312735U (en) | Ultra-thin transformer | |
| CN202771896U (en) | Common mode choke | |
| CN206312736U (en) | high power ultra-thin transformer | |
| CN207426159U (en) | A kind of novel emission antenna | |
| CN205692671U (en) | A kind of mutual inductor coil structure | |
| CN205621663U (en) | Take relay of waterproof construction | |
| CN211208222U (en) | Power inductance that anti EMI ability is strong | |
| CN209785720U (en) | integrated small transformer winding structure | |
| CN219393138U (en) | Combined high-efficiency low-cost three-phase flat wire vertical winding differential and common mode integrated inductor | |
| CN220895317U (en) | Transformer framework and transformer | |
| CN210429475U (en) | Combined isolation type transformer | |
| CN220232867U (en) | On-vehicle OBC common mode inductance structure | |
| CN220400383U (en) | Electromagnetic coil with improved structure | |
| CN209487301U (en) | The compact integrated type transformer of wiring congestion | |
| CN220731272U (en) | Electromagnetic coil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |